cocktail

Origin:

early 17th century: from cock¹ + tail¹. The original use was as an adjective describing a creature with a tail like that of a cock, specifically a horse with a docked tail; hence (because hunters and coach-horses were generally docked) a racehorse which was not a thoroughbred, having a cock-tailed horse in its pedigree (early 19th century). cocktail (sense 1) (originally US, also early 19th century) is perhaps analogous, from the idea of an adulterated spirit